Take a look at some trailers for the films playing at Sundance next week. Among the trailers is Amy Berg’s “West of Memphis,” which was produced by Peter Jackson and Fran Walsh, who after seeing HBO’s first “Paradise Lost,” began quietly financing investigations into the West Memphis Three’s case. They talk to EW here; this is how Jackson explains their involvement:

“We had no intention of doing a movie. Our involvement for the first three or four years was purely funding the case, and we made a decision to keep our funding quiet. We were working very hard, spending a lot of money gathering all the new scientific evidence and forensic evidence that had never been available to the defense before. And there was a moment in 2008 when all of our new evidence was presented to Judge Burnett, the original trial judge. We were utterly horrified when it was basically thrown out. Fran and I looked at each other and said, ‘How can we get this in front of the public?’ And at that point, we thought, ‘Well, we’re filmmakers. Maybe we should resort to what we do.’ That’s when we contacted Amy Berg.”